The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 22, 2013
Filed:
Mar. 23, 2010
Jing James Yao, Mississauga, CA;
Paul Campbell, Troutville, VA (US);
William H. Dell, Ii, Fort Loudon, PA (US);
Dale R. Wolfer, Salem, VA (US);
Timothy J. Plunkett, Roanoke, VA (US);
Jing James Yao, Mississauga, CA;
Paul Campbell, Troutville, VA (US);
William H. Dell, II, Fort Loudon, PA (US);
Dale R. Wolfer, Salem, VA (US);
Timothy J. Plunkett, Roanoke, VA (US);
Atlas Copco Secoroc LLC, Grand Prairie, TX (US);
Abstract
A retaining assembly for a cylindrical member and support sleeve in the bore of a component of a DTH. The cylindrical member and support sleeve may, for example, be a foot valve assembly for insertion into a counter bore in a bit. The cylindrical member has a cylindrical member rigidity and at least a portion of the support sleeve has a rigidity greater than the cylindrical member rigidity. A gap is provided between the sleeve and the component bore of the DTH. The cylindrical member deforms in the gap, resulting in the cylindrical member being fixedly sandwiched between the support sleeve and the component bore.